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Now you
can instantly turn clear glass into frosted privacy
glass with the flip of a switch.
Privacy Glass allows
total privacy or unobstructed viewing through stationary
and operating windows and doors, glass walls and skylights.
Privacy glass also diffuses annoying sun glare and
reduces solar heat gain to make rooms and buildings
more comfortable. In the scattering (opaque) state,
the Privacy Glass diffuses direct sunlight and eliminates
99% of the UV light transmission rays that can fade
carpet and furniture. |
| Polymer
dispersed liquid crystals were invented at Kent State
University in 1983. A major application of these materials
is in switchable windows. Developed through a joint
venture between 3M Company and Viracon, privacy glass
laminates 3M Privacy Film between two panes of glass.
The windows are wired to a wall switch that uses the
same voltage (120V/240V) as standard household appliances.
With the flip of a switch you can instantly change
the glass from clear to frosted. It's that simple.
Privacy Glass opens
up unique, affordable, design opportunities in buildings,
offices, conference rooms, lobbies, stores and homes.
Many manufacturers
offer windows using Privacy Glass to give homeowners
unique design options for any room in their home.
For bathrooms, entryways, family rooms, bedrooms and
skylights, privacy glass is the perfect choice. |
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| Glass storefront windows
and entryways, glass display cases and glass counters
can all be enhanced with Privacy Glass. The glass not
only offers privacy, it can be connected to a timer
to turn from clear to frosted to create attractive and
attention-getting traffic builders as well. And because
privacy glass is laminated like automobile windshields,
it offers added safety and security. For added convenience,
multiple windows can be turned on by the same switch. |
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Walls of privacy glass allow
you to utilise space while still maintaining privacy
in conference and meeting rooms. Since many conference
rooms are located near lobbies and central traffic
areas, Privacy Glass offers the perfect solution
to create beautifully designed rooms with light
and space while still maintaining privacy for
meetings.
Privacy Glass offers a unique
way to let the natural light in while still maintaining
privacy throughout individual offices. With privacy
glass, you don't need other window treatments
like blinds, curtains or shades to control light
or glare. Almost the same amount of light passes
through the window when it's frosted. The difference
is the light is diffused throughout the room instead
of being concentrated in one area.
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Imagine diffusing the sun's glare
and reducing the heat throughout the course of a
day. Privacy glass is perfect for skylights, sloped
glass and window walls in office buildings and factories.
Privacy glass can be incorporated into virtually
any type of window system, including insulating,
reflective or tinted glass.
So how does it work? liquid crystals
- the same technology that's been used in digital
watches and computer screens for years. Liquid crystals
are sandwiched between two layers of transparent
conductive film to make 3M Privacy Film. The film
is then laminated between two pieces of glass by
the glass manufacturer. When electricity is applied
to the film the liquid crystals line up and the
window is clear. When the power is turned off, the
liquid crystals return to their normal positions
and turn the glass from clear to frosted. The Liquid
Crystal Privacy film is sandwiched between the glass
makeup in a similar way to Laminated glass is constructed.
The outside skins are made up of glass (normally
5 or 6mm annealed glass) each side, then a PVB interlayer
is inserted on each side to trap and hold the Liquid
Crystal Privacy film
The Liquid Crystal Privacy film is made up from
electrically conductive coatings, a polymer matrix
and liquid crystals. This film has electrical wiring
to be connected to a transformer to supply power
for the "On" (clear state) mode.
In the "Off" mode, the
glass is in a frosted state due to
In the "On" mode, the
glass is in a clear state due to
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